Dynamo suspension on car-trucks.



P. KENNEDY.

1,1 59,046. Patented Nov. 2 1915.

v I 5 I ,2 S]HEETS-SHEET ll 26 5 I 5 v j WITNESSES 4- p 92 M Q ATTORNEY8P. KENNEDY.

DYNAMO SUSPENSION 0N CAR TRUCKS. APPLICATION FILED NOV.19, 1913.

1,159,046, i Pafented Nov. 2, 1 915.

2 SHEETS-SHEET 2- I 'I r I Z v A I 4 I WITNESSES INVENTOR af/v'ak427206179 v 4 TTOBNEYS for railroad cars, and is provided withlongitudinal extensions integral with the side sills 1 and unsupportedby brackets, crossbeams, Outriggers, or the like, other than thesuspension and dynamo. Theside sills are outside of the wheels and areextended on the dynamo end of the truck for a distance from the axlebeyond the location of the usual end sill. The driving pulley 2 isfastened on the rotatable truck axle 3 which carries the wheels 41 inthe well known way. Two Suspension bearings 5 are mounted on each sidesill on respective frames 6, each of which is adapted to be individuallyadjusted in position toward or from the axle by means of the nuts 7. Thesuspension for the dynamo 20 comprises two parallel cradle barsjournaled in the suspension bearings 5, each cradle bar comprising alower horizontal portion 8 extending across the truck, an upperhorizontal portion 9 at each end forming a journal, and a verticalportion 10 at each end connecting the upper and lower horizontalportions.

A. journal sleeve 11 having the terminal ears 12 is tightly clamped oneach. cradle bar, and a dynamo is provided with bearings 13 for thejournal sleeves at places intermediate of the height of the dynamo. Inthis way sidewise movement-of the dynamo is prevented, while the cradlebars may turn in the dynamo bearings. The journal sleeves- 14: arefastened on the end portions of the cradle bars by the cotter pins 15 soas to turn in the suspension bearings 5. The dynamo bearings 13 and thesuspension bearings 5 are provided with individual oiling holes 25 and26, respectively, to provide for adequate and convenient lubrication.

The adjustable springs 16 automatically regulate the belt tension totake care of momentary fluctuations by swinging the dynamo suspensionand dynamo in the bearings 5, one end of each of these springs actingagainst a member 21 rigidly fixed to the truck as shown, while the otherend presses against the adjustable nut 17 on the rod 22 which isconnected to the vertical portion 10 of the dynamo suspension. Thedynamo suspension, and therefore the dynamo, may be moved toward or awayfrom the axle at will by means of the nuts 7 so that a shorter or longerbelt 18 may be accommodated, and so that the axles of the truck anddynamo may be horizontally alined. Vertical alinement of these axles maybe obtained by placing shims under these frames, or in any othersuitable way.

It will be understood that upon movement relatively to the axle, thecradle suspension swings in the suspension bearings and turns in thedynamo bearings so that the dynamo is given movements of substantiallyparallel translation toward and from the axle, thus accommodating itsposition freely to the momentary fluctuations of the tension of the beltwhich drives the armature pulley 19 from the axle pulley 2. Furthermore,the suspension is of material of such section and dimensions as toafford the necessary rigidity and strength to the truck without theusual reinforcing members such as auxiliary brackets, cross-beams,Outriggers, etc., and may even be made sufiiciently rigid as to renderunnecessary also the use of the usual end sill at this end of the truck,if desired.

The position in elevation of the center sill of the car body isindicated in Fig. 2 by the broken line :23. The foregoing arrangement issuch that there is suflicient clearance below the bottom of this centersill to provide for all vertical and swinging movements of the centersill. Furthermore, the

construction is such that with a standard size generator used for carlighting systems on railway coaches, there is suilicient clearance abovethe top of the'service rails 24 to meet the present requirements.

Having thus described my invention, what I claim is:

1. The combination with a car truck having extended side sills andsuspension bearings mounted thereon, and a dynamo adapted to be drivenfrom the axle of the truck; of a parallel-link cradle-suspensionjournaled in said bearings and also journaled in bearings carried by thedynamo for swinging the dynamo toward and from the axle in movements ofsubstantial parallel translation; said suspension having two cradle barseach with a lower horizontal portion extending across the truck througha dynamo bearing, upper horizontal end portions forming the suspensionjournals, and vertical portions connecting the upper and lowerhorizontal portions; substantially as described.

2. The combination with a car truck having extended side sills andsuspension bearings mounted thereon, means for adjusting the bearings onthe individual side sills in position toward and from the axle of thetruck, and a dynamo adapted to be driven from the axle of the truck by abelt; of a i parallel-link cradle-suspension journaled in said bearingsand also journaled in bearings carried by the dynamo for swinging thedynamo toward and from the axle in move ments of substantial paralleltranslation; said suspension having two cradle bars each with a lowerhorizontal portion extending across the truck through a dynamo bearing,upper horizontal end portions forming the suspension j ournals, andvertical portions connecting the upper and lower horizontal positions;substantially as described.

8. The combination with a car truck having extended side sills andsuspension bearings mounted thereon, and a dynamo adapt- 1 belt tension;said suspension having two cradle bars each with a lower horizontalportion extending across the truck through a dynamo bearing,;upperhorizontal end portions forming the suspension journals;

and vertical portions'connecting the upper and lower horizontalportions; substantially as described.

4., The combination with a car truck having extended side sills andsuspension bearings mounted thereon, means for adjusting the bearings onthe individual side'sills in position toward and from the axle of thetruck, and a dynamo adapted to be driven from the axle of the truck by abelt; of at parallel-link cradle-suspension journaled in said bearingsand also journaled in bearings carried by the dynamo for swinging thedynamo toward and from the axle in movements of substantial paralleltranslation;

said suspension having two cradle bars each with a lower horizontalportion extending across the truck through a dynamo bearing,

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

upper horizontal end portions forming the suspension j ournals; 1 andvertical portions connecting the upper and lower horizontal portions;and a spring pressed member fastened to the side sill of the truck andto a cradle bar of the suspension for automati-, cally regulating thebelt tension; substantially as described. I 1

- 5. The combination with a car truck having suspension bearings carriedby longitudinal. extensions of the side sills, and a dynamo adapted tobe driven from the axle "of the truck; of a parallel-linkcradle-suspension journaled in said bearings and also journaled inbearings carried by the dynamo intermediate of its height for swingingthe dynamo toward and from the axle in movements; of substantialparallel translation;

across the truck through a dynamo bearing,

upper horizontal end portions forming the: s

suspension journals, and vertical portions connecting the upper andlower horizontal portions; substantially as described.

In testimony whereof I aflix my signature, in presence of two witnesses.

PATRICK KENNEDY. Witnesses: a i

J. L. lVATsoN, F. R. GRAATS.

Washington, I). CRT

'50 said suspension having two cradle bars each with a lower horizontalportion extending

